/* * Copyright 2019 HomeAdvisor, Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * */ package com.homeadvisor.kafdrop; import com.homeadvisor.kafdrop.config.ini.IniFilePropertySource; import com.homeadvisor.kafdrop.config.ini.IniFileReader; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.boot.SpringApplication; import org.springframework.boot.SpringApplicationRunListener; import org.springframework.context.ConfigurableApplicationContext; import org.springframework.core.Ordered; import org.springframework.core.annotation.Order; import org.springframework.core.env.ConfigurableEnvironment; import org.springframework.core.env.Environment; import java.io.*; import java.util.Objects; import java.util.stream.Stream; @Order(Ordered.HIGHEST_PRECEDENCE) public class EnvironmentSetupListener implements SpringApplicationRunListener, Ordered { private final Logger LOG = LoggerFactory.getLogger(getClass()); private static final String SM_CONFIG_DIR = "sm.config.dir"; private static final String CONFIG_SUFFIX = "-config.ini"; public EnvironmentSetupListener(SpringApplication application, String[] args) { } @Override public int getOrder() { return Ordered.HIGHEST_PRECEDENCE; } @Override public void starting() { } @Override public void environmentPrepared(ConfigurableEnvironment environment) { if (environment.containsProperty(SM_CONFIG_DIR)) { Stream.of("kafdrop", "global") .map(name -> readProperties(environment, name)) .filter(Objects::nonNull) .forEach(iniPropSource -> environment.getPropertySources() .addLast(iniPropSource)); } } @Override public void contextPrepared(ConfigurableApplicationContext context) { } @Override public void contextLoaded(ConfigurableApplicationContext context) { } @Override public void started(ConfigurableApplicationContext context) { } @Override public void running(ConfigurableApplicationContext context) { } @Override public void failed(ConfigurableApplicationContext context, Throwable exception) { } private IniFilePropertySource readProperties(Environment environment, String name) { final File file = new File(environment.getProperty(SM_CONFIG_DIR), name + CONFIG_SUFFIX); if (file.exists() && file.canRead()) { try (InputStream in = new FileInputStream(file); Reader reader = new InputStreamReader(in, "UTF-8")) { return new IniFilePropertySource(name, new IniFileReader().read(reader), environment.getActiveProfiles()); } catch (IOException ex) { LOG.error("Unable to read configuration file {}", file, ex); } } return null; } }